Houdini 20.0 Nodes Geometry nodes

HeightField Mask by Shadow geometry node

Creates a mask which areas are shadowed from a certain direction.

This node type is hidden. It is no longer supported.

Parameters

Masking

Combine with Existing

How to combine this mask with any existing mask in the input.

Replace

Clear the existing mask and replace it with the new mask.

Add

Add the values in this mask to any existing mask.

Subtract

Subtract the values in this mask from any existing mask.

Difference

Set the mask values to the difference between the old mask and this mask.

Multiply

Multiply the values of the old mask by the values in this mask. This might be useful to “scale” existing values while leaving empty areas alone.

Maximum

Set the mask values to the maximum of the old mask and this mask.

Minimum

Set the mask values to the minimum of the old mask and this mask.

Blend

Blend the old mask and this mask by a certain amount.

Blend

The amount to blend the old mask with what you draw, when Combine with existing is “blend”. A value of 0 leaves the existing mask, a value of 1 replaces with the new mask, a value of 0.5 blends equally between the old and new mask.

Light Direction

Latitudinal (“horizontal”) direction of the light source, in degrees. A value of 0 projects the light along the +X direction. A value of +90 projects light along the -Z direction.

Light Angle

Longitudinal (“vertical”) angle of the light source, in degrees. Lower numbers give a lower angle and longer shadows.

Opacity

The value to set the mask to in shadowed areas.

Distance Falloff

Amount of feathering to use around the borders of shadows. Set this to 0 to get sharp shadows, or increase to blur inside the edges.

Invert Mask

Invert the mask, so the mask shows non-shadowed areas.

Layer Bindings

Mask Layer

If a mask volume is wired into this node’s second input, this specifies which volume in the second input to use to mask this node’s effect, usually mask. Click the “Add mask paint” button to paint the mask directly in the viewport (this automatically adds a paint node to the second input).

Height Layer

The name of the height volume to operate on, usually height.

Geometry nodes